Question

Eror Message

消息2601，级别14，状态1，行1无法插入重复的键行具有唯一索引'唯一键RTU'的对象'dbo.RTU_ADDRESS'。该重复键值为（2,5,4,6,500,610，IUY）。该声明已被终止。

表格的脚本

USE [hts]
GO

/****** Object:  Table [dbo].[RTU_ADDRESS]    Script Date: 03/19/2013 21:07:19 ******/
SET ANSI_NULLS ON
GO

SET QUOTED_IDENTIFIER ON
GO

SET ANSI_PADDING ON
GO

CREATE TABLE [dbo].[RTU_ADDRESS](
    [RowNo] [int] IDENTITY(1,1) NOT NULL,
    [StationId] [int] NULL,
    [SystemId] [int] NULL,
    [CCNumber] [int] NULL,
    [LineNumber] [int] NULL,
    [RTUNumber] [int] NULL,
    [SRTUNumber] [int] NULL,
    [Description] [char](100) NOT NULL,
    [SDescription] [char](100) NOT NULL,
    [Area_ID] [char](10) NOT NULL
) ON [PRIMARY]

GO

SET ANSI_PADDING OFF
GO

索引脚本

USE [hts]
GO

/****** Object:  Index [Unique Key RTU]    Script Date: 03/19/2013 21:08:31 ******/
CREATE UNIQUE NONCLUSTERED INDEX [Unique Key RTU] ON [dbo].[RTU_ADDRESS] 
(
    [StationId] ASC,
    [SystemId] ASC,
    [CCNumber] ASC,
    [LineNumber] ASC,
    [RTUNumber] ASC,
    [SRTUNumber] ASC,
    [Area_ID] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, SORT_IN_TEMPDB = OFF, IGNORE_DUP_KEY = OFF, DROP_EXISTING = OFF, ONLINE = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
GO

C＃代码：

SqlDataAdapter sqlAdapter = null;
                strSelectCmd = "SELECT RowNo FROM RTU_ADDRESS";
                SqlCommand sqlCmd = new SqlCommand();
                sqlCmd.Connection = m_SqlConn;
                sqlCmd.CommandText = strSelectCmd;
                int i = Convert.ToInt32(sqlCmd.ExecuteScalar());
                sqlAdapter = new SqlDataAdapter();
                sqlAdapter.SelectCommand = sqlCmd;


                strInsCmd = "UPDATE RTU_ADDRESS SET RTUNumber='" + rtunum.Text + "', SRTUNumber='" + srtunum.Text + "', Description='" + desc.Text + "', SDescription='" + sdesc.Text + "' WHERE Area_ID='" + area_ID.Text + "' AND StationId='" + station.Text + "' AND SystemId='" + sys.Text + "' AND CCNumber='" + ccnum.Text + "' AND LineNumber='" + linenum.Text + "'";

                strErrorMsg = Utilities.ExecuteSQLCommand(m_SqlConn, strInsCmd);
                string check = "duplicate";
                bool d = check.Any(strErrorMsg.Contains);
                if (d == true)
                {
                    MessageBox.Show(" Duplicates Entries Found", "Database Insertion");
                }
                else if (string.IsNullOrEmpty(strErrorMsg) == false)
                {
                    MessageBox.Show(this, "Error!Unable to Add New RTU Configurations!", "RTU Configurations error");
                }
                else
                {
                    d = false;
                    this.Close();
                }

我现在迷失了该做什么，我没有提出任何重复。

我只想更新RTUNumber，SRTUNumber，Description和SDescription，同时保持我的stationID，systemID，CCNumber，LineNumber和Area_ID不变。请帮忙

更新：选择声明

SELECT * FROM RTU_ADDRESS WHERE Area_ID='IUY ' AND StationId='2' AND SystemId='5' AND CCNumber='4' AND LineNumber='6'

给我2个结果，但RTUNumber和SRTUNumber是不同的。

请帮忙

Answer 1

嗯，很明显，您尝试进行的更新会在您的表中生成重复内容。您是否尝试根据您尝试更新的值对表进行选择？你很可能会找到一条现有记录......

Answer 2

查看更新语句的where子句中的条件，如果记录具有相同的AreaId，SystemId，StationId，CCNumber和LineNumber，则会出现此错误，因为您尝试使用相同的RTUNumber更新它们和SRTUNumber。你可以通过运行这个sql来检查这个：

SELECT AreaId, SystemId, StationId, CCNumber, LineNumber, COUNT(*)
FROM RTU_ADDRESS
GROUP BY AreaId, SystemId, StationId, CCNumber, LineNumber
HAVING COUNT(*) > 1

如果返回任何行，则会出现“重复”错误。

事实上，您编辑的版本说的就是这种情况。虽然这两个记录可能有不同的SRTUNumbers和RTUNumbers，但您尝试在更新语句中为它们提供相同的SRTUNumber和RTUNUmber。

在我的表上执行UPDATE时出现sql错误

2 个答案: